Burner construction



Jan. 12 1926.

o. J. GROEHN BURNER CONSTRUCTION Filed Jan. 16, 1922 Patented Jan. 12,1926.

`UNITED STATES PATENT f OFFICE.

OTTO J. GROEI-IN, OF DETROIT, MICHIGAN, ASSIGNOR TO CLAYTON 8c LAMBERTMANU- FACTURING COMPANY, OF DETROIT, MICHIGAN,

A CORPORATION OF MICHIGAN.

`BURNER CONSTRUCTION.

Application filed January 16, 1922.` Serial No. 529,510.

To all whom t may concern Be it known that I, O'r'ro J. GROEHN, acitizen of the United States of America, residing at Detroit, in thecounty of Wayne and State of Michigan, have invented certain new anduseful Improvements in Burner Construction, of which the 'following is aspecifica-tion, reference being had therein to the accompanyingdrawings.

This invention relates to torch `construction and refers moreparticularly to blow torches or the like although the invention inkcertain of its broader aspects is not limited tothe particular typementioned.

Among the objects of the invention are to provide a construction havingbetter resistance to breakage or injury of the parts than those now inuse, and one which can be economically manufactured. The invention alsoresides in the novel arrangement of the burner wherein an integralsupporting lug is used for not only strengthening the parts but alsoconducting the heat to the burner nozzle where great heat is desirable.Other features of the invention reside in they novel supporting basisfor the tank of the torch and in such other details of construction andarrangements and combinations of parts as will more fully hereinafterappear. In the drawings:

Figure l is a side elevational view partly in section of a blow torchembodying my invention;

Figure 2 is a longitudinal elevation view in cross section of theburner, and

Figure 3 is a section along 3-3 of Figure 2. f

Describing in detail the particular embodiment of my invention shown inthe drawings, A designates provided with the usual handle B andsupporting standard C which carries the burner D. Fuel from the tank tothe discharge nozzle X of the burner is controlled by a valve E operatedby the handle E on the stem E2 and the usual starting drip cup G isprovided, the parts so far described being of the usual construction.

At its lower end the tank A is provided with a base H which serves notonly as a support for the tank and a guard for the lower end thereof butis also utilized for securing the bottom A of the tank to the lower sidewall A2 thereof in a novel manner. As shown in detail in Fig. l thelower the tank of the torch' end of the side wall A2 is outwardly osetat J and terminates in a curved or rolled portion J which receives thelower end A3 of the bottom A. These parts are first constructed andassembled and secured together in assembled position, but the base H isalso used as a securing member in the following manner. Near its upperend the base H has a downwardly offset portion H which terminates in aroll H2 extending around the roll J thus locking the base to the tankand also assisting in forming the joint between the bottom of the tankand the side walls thereof. A very important feature of thisconstruction is the fact that it reduces the area at the bottom of thetank as compared with a bottom formed at the lower edge of the base H.In previous constructions dificulty has been encountered owing to suchbottoms blowing out on account of the great area and this Objection isovercome in the present construction. Not only does the rolled in flangeH2 tend to reduce the area of the bottom of the tank but it also forms areinforcement. This novel construction has a further advantage that itpermits of the usual brass tank construction while providing a steelbase for the same.

The burner D has the usual combustion chamber K into which fuel from thenozzle X is discharged. In structures of this type it is customary atthe rear of the combustion chamber and at substantially the forward endof the discharge nozzle to provide air ports such as the ports L. In thepresent construction these ports are provided by spaces left between thebottom portion M having a passage M for conducting fuel to the nozzle Xand the top lug N. The latter forms an important feature vof myvinvention since it is so constructed and arranged as to form not onlyan integral reinforcement for the burner but also a means for conductingheat from the walls of the combustion chamber K back to the nozzleportion X. As this isr a portion of the burner where it is desirable tohave a high degree of heat this particular arrangement is of materialadvantage. I do not however desire to limit the invention to theparticular construction shown except as ultimately set forth in theclaims.

I claim:

l. In a blow torch or the like, the combination with a tank, of a burnertherefor, said burner ha ving a longitudinally extending combustionchamber, a discharge nozzie at the rear thereof, said nozzle having itsforward extremity projecting into the rear of the combustion chamber,said burner having a bottom portion forming a fuel conducting passage tosaid nozzle, and a top lug integrallg7 connecting the rear of theCombustion chamber ata point intermediate the length of the nozzle andthe rear portion of the nozzle, said lug being spaced from said nozzleand extending diametrically opposite the said bottom fuel conductingportion of the burner to form therewith longitudinally extending airports around a portion of the said forwardly projecting extremities,said lug extending longitudinally7 of the combustion chamber and beingof a reinforcing Character to form an integral reinforcement for theburner and also for Conducting heat from the Walls of the combustionchamber to the nozzle.

2. in a blow torch or the like, the combination With a tank, of a burnertherefor, said burner having a longitudinally extending combustionchamber, a discharge nozzle at the rear thereof, said nozzle having itsforward extremity projecting into the rear of the combustion chamber,said burner having a bottom portion forming a fuel conducting passage tosaid nozzle, and a lug integrally connecting the rear of the combustionchamber at a point intermediate the length of the nozzle and the rearportion 0f the nozzle, said lug being spaced from said nozzle to formair ports with the said bottom fuel conducting portion of the burner,Said lug extending longitudinally lof the combustion chamber, and beingof a reinforcing character to form an integral reinforcement for theburner and also for conducting heat froin the Walls of the combustionchamber to the nozzle.

In testimony whereof I affix my signature.

OTTO J. GROEHN.

